Results 261 to 270 of about 227,179 (317)
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Measurement of the Normal-Fluid Velocity in Superfluids
Physical Review Letters, 2005Numerical calculations of (finite temperature) superfluid vortex ring propagation against a particulate sheet show that the solid particle trajectories collapse to a very good approximation to the normal-fluid path lines. We propose an experiment in which, by measuring the solid particles' velocities, direct information about the instantaneous normal ...
Kivotides D, Barenghi CF, Sergeev YA
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A Study of Fluid Velocities in Tribological Fluid Film
Journal of Tribology, 1994Recently a model of Reynolds stress in turbulent lubrication theory was proposed by Tieu and Kosasih (1992) based on a modified Van Driest mixing length formula. It was developed from a study of Poiseuille flow velocities in narrow gaps. As a continuation of that study, this paper describes an investigation into fluid velocities in fluid film bearings.
A. K. Tieu +2 more
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2021
Fluid flow—liquid or gas—occurs in most processes. In applications where the details are important, the fluid velocity needs to be measured as a field variable. A detailed velocity map may be required for optimizing the fluid flow system from the view point of pressure drop and the consequent pumping power requirement.
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Fluid flow—liquid or gas—occurs in most processes. In applications where the details are important, the fluid velocity needs to be measured as a field variable. A detailed velocity map may be required for optimizing the fluid flow system from the view point of pressure drop and the consequent pumping power requirement.
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Velocity Fluctuations of a Body in a Fluid
The Physics of Fluids, 1971An extension of the usual treatment of Brownian motion is given. The motion of a body in a fluid is considered to be described by a quite general form of retarding force. To describe the expected fluctuations, correlation functions are obtained from a fluctuation-dissipation theorem.
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The influence of a mean fluid velocity gradient on the particle-fluid velocity covariance
International Journal of Multiphase Flow, 1994Abstract The effect of a mean fluid velocity gradient on the particle-fluid velocity covariance and fluctuating relative velocity for a small solid particle suspended in a turbulent gas is examined using Fourier transform techniques. The presence of such a gradient is shown to elevate the covariance above the level predicted without it.
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Bi-velocity hydrodynamics. Multicomponent fluids
International Journal of Engineering Science, 2009zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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On the velocities of the barotropic perfect fluids
Journal of Mathematical Physics, 1990The conditions for a unit vector field to be the velocity of a relativistic barotropic perfect fluid are given. These conditions induce an eightfold classification of such fluids; for every class, the admissible barotropic variables are found. Some special cases, in particular polytropic fluids, are analyzed separately.
Coll, Bartolomé, Ferrando, Joan Josep
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On the Velocity of Sound in Fluids
Journal of the Aeronautical Sciences, 1951NOT LONG AGO there was a protracted discussion of the velocity of sound, begun by Professor Morduchow's objection to the "lack of rigor" in the customary derivations and carried on by Professors Morkovin, Morduchow, and Millikan, and by Dr. Munk. None of these authors saw fit to define the velocity of sound before deriving its value; most of the ...
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The Velocity Distribution for Ferromagnetic Fluids
Advanced Materials Research, 2013The magnetic fluids are assumed non-conductive with few free electrons existing, then the boundary layer equations are obtained for two special non-conductive ferromagnetic fluids, i.e. non-conductive Poiseuille flow and Couette flow, and the velocity distribution are found to be parabolic.
Ming Jun Li, Kai Fu Liang
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Fluid effects on velocity and attenuation in sandstones
The Journal of the Acoustical Society of America, 1991Ultrasonic velocity and attenuation measurements in sandstones with a variety of saturating fluids are compared with the predictions of Biot’s theory of porous media acoustics. Velocity data show systematic deviations from Biot theory as a function of pore fluid viscosity.
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